The episode, “In Sickness and In Wealth” is a story about health, but it’s not about doctors or drugs. Set mostly in Louisville, Kentucky, it’s a detective story out to solve the mystery of what’s stalking and killing so many Americans before their time. The program uncovers the connections between healthy bodies and healthy bank accounts – and why residents of so many other nations, including many poorer countries, live longer and healthier lives. Solutions, evidence suggests, may lie not in more pills but in more equality.